Elevator



(No Model.)`

, 3 sheets-sheet 1. R.W. HARE.

ELEVATOR.

lMHIIHIHIIIHIIIIII Patented Jan. 4, 1898.

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(No Model.) 3 Sheets- Sheet 2.

R. W. HABE.,

BLBVATOR, No. 596,589. Patented Ja11.4,1898.`

A2 je (No Model W. BARR V3 maths ELLVATORl heet. 3Vl

Jan 4 18 @M Vf@ l claims.

NITED STATES PATENT Eric D. DALLAs HARE,

OF SAME PLACE.

ELEVATO R.

SPECIFICATION forming part of Letters Patent N o. 596,589, dated January 4, 1898.

Application ned nach 2o, 1895.

To @ZZ whom it may concern:

Be it known that I, ROBERT W. HARE, a citizen of the. United States of America, residing at Allegheny, in the county of Allegheny and State of Pennsylvania, have invented certain new and'useful Improvements in Elevators, of which the following is a speciiication, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in elevators, and more particularly to that class of inventions known as fire-doors for elevator-shafts.

The invention has for its object the provision ofY novel means whereby the fire-doors may be carried on the top of the elevator-car, as well as below the same, closing the hatchway automatically as the car ascends and descends; furthermore, to securely lock the doors to their respective iioors, thereby providing a safeguard that will be obviously apparent.

A further object of myinvention is to construct elevator-doors of the above-referred-to class that will be strong, durable, comparatively inexpensive to manufacture, and eftlcient in their operations; furthermore, to s construct the doors or hatch-guards that when the latter are placed in position less draft will be created than with the guards employed at the present day.

A still further object of the invention is to dispense with the hangers at the top of the elevator-shaft and provide a novel mechanism on the lowermost door whereby the series of doors or guards may be retained at any desired licor.

With the above and other objects in view the invention finally consists in the novel construction, combination, and arrangement of parts to be hereinafter more particularly described, and specifically pointed out in the In describing the invention in detail reference is had to the accompanying drawings, forming a part of this specification, and wherein like letters of reference indicate similar parts throughout the several views, in which- Figure 1 is a View in perspective of an elevaits front.

tor. Fig. 2 is a view in `elevation looking at Serial No. 542,480. (No model.)

Fig. 3 is a top plan view thereof. Fig. Liis aplan view of the bottoni of the lower door of the top series. Fig. 5 is a view in perspective of a section of the side posts, showing the weights and connections. Figs. 6 and 7 are views showing the gravity-latch and a modiiication, respectively.

In the drawings, A denotes the elevatorcar, provided at its top with door-supports A A', which may be of any desired construction or form.

A2 A2 denote guides arranged at the sides of the elevator-car and adapted to partially embrace the side posts B of the elevator-shaft.

C denotes the lowermost door of the top series,arranged directly above the elevator-car, provided with a gravity-lever C', slightly weighted at its free end C2, and notched, as shown at C3, said lever being suitably hinged at C4. Anoperating-lever C5 is attached at its free end to a line C6 and fulcrumed at C7 near the center of the door. Near the center of said lever is attached alink Cs,connected to a pivoted arm C9, thelatterbeing pivoted at C10 and provided at its free end with a slot C, being designed to engage a pin C12 of the bolt C13, said bolt operating in a guide C14. The pivoted arm C9 also carries avlinkOlS, and to the latter is attached an arm C1G,centrally pivoted at C17, engaging a pin O19 of the bolt C20, operating in a guide C21. The end of the operating-lever C5 carries a link C22, and attached thereto is a pivoted arm C23, pivoted at C24 and apertured at- ()25 for the reception of the pin of the bolt G27, operating in a guide C28. Attached to the pivoted arm C23 is a link C29, connected to a pivoted arm C30, cent-rally pivoted at C31 and provided with an aperture for the reception of the pin C33 of the bolt C34, operating in a guide G35. Bearings C37 are also arranged on the under side of the door, and in the latter is journaled the pulley C38.

- C40 represents a weight attached to the line C6.

The reference-letter D denotes a gravitypawl 4forming a latch arranged at each side of a landing or floor. Said pawl is apertured at D for the reception of a pivot,lthe said pawl being of peculiar construction, provided with an inclined bearing-surface D3 above the IOO common shaft E12,and on the opposite side of the covering E are the pulleys E14 E15, on a arranged the pulleys E17 E18, and directly in alinement with the same are the pulleys E19 and E20.

The lreference-letter H represents a counterbalance-weight which is suspended by means of cables or lines F F2 F2 F4, the said lines F and F2 passing over pulleys E5 and E6, respectively, and connecting with the uppermost of the lower doors-z'. e., door E21- beneath the elevator-cage. F4, being attached to the weight H, passes over the pulleys E11 E2 E E20, and thence to the lower door E21, arranged underneath the elevator carriage. The line F3 is also attached to the weight H, passing over the pulleys E12, E2, E', and E18, and thence to the door.

It will be noted that the pulleys E', E2, E3, and E4 are double pulleys, one arranged above the other, and may be operated in opposite directions.

H represents the lower weight, having connected thereto lines G', G2, G3, and G4. The said lines G and G2 pass over pulleys E7 and E2, respectively, the line G passing over to the pulley E15, and thence to the second door G21, arranged under the elevator-car. The line G2 is also passed, as heretofore stated, over the pulley E2, and thence to the second door G21 under the elevator-car, the lines G3 and G4 passing over pulleys E9 and E10, re-

spectively, the line G3 passing over the pulleys E4 E3 E17 to the door G21, as heretofore stated. The line G4 passes over the pulley E4, E3, and E19, and thence t'o the door G21. The counterbalance weights are apertured, as shown at H2, and slotted at the sides at H4, forming guides against the side posts. The said apertures are diminished as the lower weights are reached, as a less number of lines are required to pass through the same. The weights are beveled at the sides, as shown at H5. Stops or rests are provided on the side posts, as illustrated by reference-letters H6 H0.

I represents the door-supports arranged at the top of the elevator-shaft, which are preferably bent at right angles, as shown at I I.

The operation of the device is as follows: For the purpose of illustration let us assume that the elevator-car is in the position as shown in Fig. l of the drawings. As the car ascends in the elevator-shaft the door-supports arranged at the top of the elevator-car will engage the door next above it, the same being released by the gravity-latch being thrown out of alinement, the car engaging the inclined bearing-surface and thereby producing the desired result. The same operation will take place at the floor above, and so on consecutively until all or the desired number of doors are released vfrom the gravity-pawls and stored at the top of the elevator-shaft. In order to store the doors, the line C0 is operated, thus communicating motion to the lever O5, thus operating the series of pivoted arms and links, as shown in dotted lines,

, Fig. 4 of the drawings, causing the bolts to common shaft E10, and on the same side are i be forced outwardly beyond the line of the doors and engaging the door-supports I at the top of the shaft. Simultaneously with this operation, as the lever C5 is drawn over to the desired position, the gravity-lever'C will engage the latter by reason of the slot or notch C3 engaging said operating-lever C5 and locking the same in this position. In order to release the doors from their holders, the doorsupports on the car are so arranged as to come in contact with the weighted end of the gravlity-lever O. The latter, being hinged, will be slightlylifted and disengage the operatinglever O5, the latter then assuming its normal position by reason of the weight attached to the line C, said line in turn being connected to the lever C5, the above operation causes the bolts to contract and release the doors from their supports, thus allowing the doors to pass down and engage at their respective floors or landings. It will be understood that the old and well-known system of graduated blocks or stops is employed to accomplish the above purpose. As the elevator-car ascends from the lower iloor the counterbalance-weights operating the lower doors will travel downwardly to their respective stops, and when this point is reached the lower doors will have reached their respective iioors and also engage the gravity pawl or lock. As the car again descends the inclined surface of the gravity-pawl will be engaged, causing the doors to be released and forced downwardly as the car descends, the weights by this operation being taken from their supports and carried upwardly. It will be noted that a great advantage is obtained by reason of the arrangement of the stops provided for the weight, as the doors arranged below the elevator-car are not required to be cut out to pass the stops, which would be otherwise required. By this construction less draft is created and a more efficient set of doors is produced.

It will be readily seen that the doors arranged below the elevator-car may be dis- If it is desired to securely lock the IOO IIO

ISO

the drawings is employed. In this construction the door will be given a substantial support frombelow and will also be prevented from becoming disengaged by reason ot' an upward draft in case of iire, the shoulder, being formed at right angles, preventing an upward displacement. In case it is desired to merely support the doors the construction as shown in Fig. 7 of the drawings is employed. The inclined shoulder of the latter will permit it to be easily raised, as will be obviously apparent.

I call attention to the fact that only two doors above and below the elevator-car have been shown and described; yet any number of doors maybe easily arranged to operate in the same manner, a corresponding number of additional lines and weights being necessary to accomplish the operation.

Another advantage gained by the novel arrangement of the weights resides in the fact that eachdoor arranged beneath the elevatorcar is operated by a single counterbalanceweight. Heretofore four weights have been employed to accomplish this purpose. four lines being attached to each weight and operating in unison will effectually prevent the doors from binding in the elevator-shaft as the car ascends and descends.

It will be noted that various changes may be made in the details of construction of the above-described device without departing from the general spirit of my invention.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In an elevator, a car, an operating-rope, a series of doors arranged above the car, a series of pivoted spring-pressed arms and links arranged on the lower door, bolts operated by the arms and the operating-lever connected The with the arms, as and for thel purpose described.

2. In an elevator, a car,a11 operating-rope, a series of doors arranged above said car, a series ot pivoted spring-pressed arms and links arranged on the lowermost door, bolts operated by the arms, a notched gravity-lever, and an operating-lever connected with the arms, as and for the purpose described.

3. In an elevator, the combination of a car, a series of doors, spring-pressed arms carried by one of the doors, and a gravity-pawl having inclined bearing-surfaces, a weighted eX- tremity and a notch as and for the purpose described.

4. In an elevator, a car, a series of doors arranged to be operated by the car, a pulley, a line arranged on the lowermost door above the car, an operating-lever, arms having link connections with the lever, and bolts operated by the lever, as and for the purpose described.

5. In an elevator, a car, a series of doors arranged to be operated by the car, a pulley, a line arranged on the lowermost door above the car, an operating-lever, arms having link connections with the lever, bolts operated by the lever and gravity-pawls having inclined surfaces, weighted extremities, and notches, as and for the purpose described.

6. In an elevator, a series of doors arranged in the shaft, a series of weights adapted to travel in vertical alinement, each door having a single weight, and connections between each door and its weight, as and for the purpose described.

In testimony whereof I affix my signature in presence of two Witnesses.

` ROBERT W. HARE.

XVitnesses:

I-I. C. EVERT, ALFRED M. WILSON. 

